Need to count rows only if there are 4 or more values in a certain hour on a certain date

cdcomer

New Member
Joined
Aug 13, 2018
Messages
1
Hi -

Admittedly a newbie.

I am analyzing a file with 16811 rows.

We have interval start data that shows date, hour, minute per quarter hour (00, 15, 30, 45). If they do not meet this criteria, those rows are out of scope for our current analysis

We wish to analyze and chart only the data where there are 4 or more entries for the date and hour. (Some projects have more than one meter, so there could be more than 4 entries for those projects, which is why we are after 4 or more)

In the sample data below, we would not want to count the date 6/1 with start hours 9, 13, 14 or 15.
In the sample data below, we want to count the date 6/1 with the start hours 10, 11 and 12.

Each file spans a month, so the date and hour are the variables. What formula will we use to flag the data for further analysis? We have also added separate columns for day, month and hour if that helps to flag the data we're after.



INTERVAL_START_TIMEStart DayStart MonthStart Hour<3
6/1/2018 9:156/169
6/1/2018 9:306/169
6/1/2018 9:456/169
6/1/2018 10:006/1610
6/1/2018 10:156/1610
6/1/2018 10:306/1610
6/1/2018 10:456/1610
6/1/2018 11:006/1611
6/1/2018 11:156/1611
6/1/2018 11:306/1611
6/1/2018 11:456/1611
6/1/2018 12:006/1612
6/1/2018 12:156/1612
6/1/2018 12:306/1612
6/1/2018 12:456/1612
6/1/2018 13:156/1613
6/1/2018 13:306/1613
6/1/2018 13:456/1613
6/1/2018 14:006/1614
6/1/2018 14:156/1614
6/1/2018 14:306/1614
6/1/2018 15:306/1615

<colgroup><col><col><col><col><col></colgroup><tbody>
</tbody>
 

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Excel Facts

Enter current date or time
Ctrl+: enters current time. Ctrl+; enters current date. Use Ctrl+: Ctrl+; Enter for current date & time.

Rijnsent

Well-known Member
Joined
Oct 17, 2005
Messages
1,300
Office Version
  1. 365
Platform
  1. Windows
Hi there,
try the COUNTIFS formula
In your example a formula for column E (example E2):
=COUNTIFS($B$2:$B$1000,B2,$C$2:$C$1000,C2,$D$2:$D$1000,D2)
Cheers,
Koen
 

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